Product Name: DC regulated power supply
Product model: dcks23-28500c
This series of products are dc28v DC power supply specially designed and manufactured for aviation and military electronic and electrical equipment with high frequency power electronic conversion technology, which can be used for aircraft and airborne equipment, aerospace and navigation
And other military electronic equipment, as well as other occasions requiring 28V DC power supply. This series of products meet the national military standard gjb181 - aircraft power supply characteristics and requirements for electrical equipment, gjb572 - aircraft ground
The power supply characteristics and general requirements of surface power supply are the replacement products of DC unit and SCR rectifier power supply.
1. IGBT high frequency switching control technology is adopted to make the regulated power supply have good output performance and system stability;
2. IGBT high frequency static conversion, small volume, light weight, low noise, high efficiency;
3. Standardized module design makes the maintenance of power supply simple and fast.
1. Input:
Input voltage range: 115V / 200V ± 15%; 220V / 380V ± 15%
Input frequency range: 400 Hz ± 10 Hz; 50Hz ± 5 Hz
2. Output:
Rated voltage: DC 28V
Rated current: 500A
Voltage regulation range: 1V ~ 34V
Adjustment resolution: 0.1V ～ 1V
Source adjustment rate: ≤± 0.5% FS
Load adjustment rate: ≤± 1% FS
Overall efficiency: ＞ 85%
Ripple content: 100mV (RMS)
Dynamic characteristics: the overshoot and recovery time characteristics meet the requirements of gjb572.
3. General requirements
Working temperature: - 25 ～ 50 ℃
Storage temperature: - 40 ～ 55 ℃
Humidity: ≤ 90%
Altitude: ≤ 2000m
Cooling mode: forced air cooling
Noise: 65dB
Protection class: IP20
4. Protection function
4.1 output overvoltage protection:
When the output voltage exceeds 10% of the upper limit value of the regulation range, the over-voltage protection circuit is protected immediately and the power output is turned off.
4.2 internal overheating protection:
During the operation of the power supply, when the radiator temperature of the power module exceeds 85 ℃, the overheating circuit acts immediately and turns off the power output.
4.3 input over and under voltage protection:
During the operation of the power supply, when the voltage fluctuation range of the power grid exceeds ± 15% of the allowable fluctuation range of the power supply, the input overvoltage and undervoltage circuit will act immediately and turn off the power output.
